/* 
 * Copyright 2010 Ziya Guven Koylu, Ozge Koylu
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at 
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package com.koylu.caffein.query.join;

import com.koylu.caffein.model.caffein.CaffeinConfig;
import com.koylu.caffein.model.clazz.Clazz;

public abstract class Join {
	
	public static Join inner(String alias, String on){
		return new InnerJoin(alias, on);
	}
	
	public static Join right(String alias, String on){
		return new RightJoin(alias, on);
	}

	public static Join left(String alias, String on){
		return new LeftJoin(alias, on);
	}
	
	public static Join full(String alias, String on){
		return new FullJoin(alias, on);
	}
	
	public abstract String getAlias();
	public abstract Clazz getJoinClazz(CaffeinConfig caffeinConfig, Clazz clazz) throws Exception;	
	public abstract StringBuffer toQuery(CaffeinConfig caffeinConfig, Clazz clazz, String clazzAlias) throws Exception;
}